Cod sursa(job #2545223)

Utilizator tomaionutIDorando tomaionut Data 12 februarie 2020 21:53:17
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.06 kb
#include <bits/stdc++.h>

using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int n,k,a[500005];
char s[4000005];
deque <int> d;
int main()
{
    int i,semn=0,x,cnt=0,ma=INT_MIN,p;
    fin >> n >> k;
    fin.get();
    fin.getline(s,4000000);
    for (i=0; s[i];)
    {
        if (s[i]=='-')
        {
            semn=1;
            i++;
        }
        else if (s[i]==' ')
        {
            i++;
        }
        else if (isdigit(s[i]))
        {
        while (isdigit(s[i]))
        {
            x=x*10+s[i]-'0';
            i++;
        }
        if (semn==1) x*=-1;
        a[++cnt]=x;
        semn=0;
        x=0;
        }

    }
    p=k;
    for (i=1; i<=cnt; i++)
    {
        while (!d.empty() and a[d.back()]>=a[i])
            d.pop_back();
        d.push_back(i);
        if (d.front()<=i-k) d.pop_front();
        if (ma<a[d.front()] and i>=k)
        {
            ma=a[d.front()];
            p=i;
        }
    }
    fout << p-k+1 << " " << p << " " << ma;

    return 0;
}